Kusto范围函数语义错误：“”具有以下语义错误：未解析的引用绑定：“ XXX”

Question

让a =（arg0：long）{toscalar（Incidents | where IncidentId == arg0 | count）}; 范围idx从0到11步骤1 |扩展一个（idx）

我的kusto查询字符串就是这样，虽然很容易理解，但却无法正常工作。

Answer 1

您遇到了用户定义函数的局限性，如此处所述： https://docs.microsoft.com/en-us/azure/kusto/query/functions/user-defined-functions#restrictions-on-the-use-of-user-defined-functions

您应该可以通过执行以下操作（匹配您提供的示例）来实现您的目标：

let count_by_incident_id = 
    Incidents 
    | summarize count() by IncidentId
;
range idx from 0 to 11 step 1
| join hint.strategy = broadcast (count_by_incident_id)
    on $left.idx == $right.IncidentId